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ocfs2: fix possible uninitialized variable access

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In ocfs2_local_alloc_find_clear_bits and ocfs2_get_dentry, variable
numfound and set may be uninitialized and then used in tracepoint.  In
ocfs2_xattr_block_get and ocfs2_delete_xattr_in_bucket, variable block_off
and xv may be uninitialized and then used in the following logic due to
unchecked return value.

This patch fixes these possible issues.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joseph Qi 2015-04-14 15:43:33 -07:00 • committed by Linus Torvalds
parent 7c01ad8fe7
commit 023d4ea358
3 changed files with 10 additions and 2 deletions
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2
fs/ocfs2/localalloc.c
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@ -839,7 +839,7 @@ static int ocfs2_local_alloc_find_clear_bits(struct ocfs2_super *osb,
u32 *numbits,
struct ocfs2_alloc_reservation *resv)
{
int numfound, bitoff, left, startoff, lastzero;
int numfound = 0, bitoff, left, startoff, lastzero;
int local_resv = 0;
struct ocfs2_alloc_reservation r;
void *bitmap = NULL;